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Suh, Pann-Ghill
BioSignal Network Lab (BSN)
Research Interests
  • Signal transduction, cancer, metabolism, phospholipase C

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Involvement of SH2-SH2-SH3 domain of phospholipase C gamma 1 in NF-kappa B signaling

Cited 7 times inthomson ciCited 8 times inthomson ci
Title
Involvement of SH2-SH2-SH3 domain of phospholipase C gamma 1 in NF-kappa B signaling
Author
Kim, Bo-YeonKang, Dae-OokOh, Won-KeunKim, Jin-HeeChoi, Yong-KyungJang, Jong-SooSuh, Pann-GhillRyu, Sung-HoMheen, Tae-IckAhn, Jong-Seong
Keywords
Nuclear factor κB; Phospholipase Cγ1; Protein kinase C; Mitogen activated protein kinase; Phosphatidylinositol 3-kinase; SH2-SH3
Issue Date
2000-04
Publisher
ELSEVIER SCIENCE BV
Citation
FEBS LETTERS, v.472, no.1, pp.45 - 49
Abstract
To directly define the role of phospholipase C gamma 1 (PLC gamma 1) in NF-kappa B activation, NF-kappa B promoted luciferase reporter gene plasmid (pNF-kappa B-Luc) was transfected into rat-3Y1 fibroblasts that overexpress whole PLC gamma 1 (PLC gamma 1-3Y1), src homology domains SH2-SH2-SH3 of PLC gamma 1 (SH223-3Y1) and v-src (Src-3Y1), Transient transfection with pNF-kappa B-Luc remarkably increased the luciferase activity in all three transformants compared with normal rat-3Y1 cells. Pretreatment with inhibitors of protein tyrosine kinase reduced this increase in luciferase activity, but U73122 (a PLC inhibitor) did not. While PD98059, an inhibitor of mitogen activated protein kinase (MAPK), significantly reduced the luciferase activity, there was no effect by wortmannin and Ro-31-8220, inhibitors of phosphatidylinositol 3-kinase (PI3K) and protein kinase C (PKC), respectively. This study shows a direct evidence that the SH2-SH2-SH3 region of PLC gamma 1 contributes to the NF-kappa B signaling and that MAPK, but not PI3K and PKC, is involved in SH2-SH2-SH3 mediated NF-kappa B activation in these cells. (C) 2000 Federation of European Biochemical Societies
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DOI
10.1016/S0014-5793(00)01415-0
ISSN
0014-5793
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BME_Journal Papers
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